During an appearance at George Mason University in Fairfax, Virginia, Obama coined a new term -- “Romnesia” -- for what he said are Romney’s changes in positions.

“If you come down with a case of Romnesia and you can’t seem to remember the policies that are still on your website or the promises that you’ve made over the six years that you’ve been running for president, here’s the good news: Obamacare covers pre-existing conditions,” Obama, 51, said in a reference to the health-care law enacted in 2010.

Romney, 65, doesn’t have any campaign events until Friday evening, when he will be joined by his running mate, Representative Paul Ryan of Wisconsin, for a rally in Daytona Beach, Florida.

Ahead of the debate at Lynn University in Boca Raton, Florida, Obama will spend the weekend at the Camp David presidential retreat in Maryland, while Romney will encamp in Delray Beach, Florida. The final face-off between the men will focus on foreign policy.